package com.study.javaOther.recommend_system;

public class TestUnit implements Runnable {
    public void run() {
        System.out.println("this is run()");
    }

    public static void main(String args[]) {
//        Thread t = new Thread(new TestUnit());
//        t.start();
        String stil = "boy";
        String tom = "boy";
        System.out.println(stil == tom);
    }

}

